2) heterogeneous nucleation surface coating process
非均匀形核表面包覆
1.
Preparation methods of BaTiO3-based PTC ceramic powder with surface modifying techniques (particle surface modifying method; citrate solution-liquid phase coating method; polyacrylamide gel-liquid phase coating method and so on) were introduced,especially the principle,characteristic,research status and applied prospect of heterogeneous nucleation surface coating process.
重点介绍BaTiO3基PTC瓷粉非均匀形核表面包覆制备的原理、特点、研究现状和应用前景。
3) heterogeneous nucleation
非均匀成核
1.
Ferrite MgFe2O4 coated carbonyl iron composite powder was prepared by heterogeneous nucleation combined with the liquid deposition method to improve the oxidation resistance performance of carbonyl iron powder.
采用非均匀成核和化学沉淀相结合的方法制备了MgFe2O4铁氧体原位包覆羰基铁超细复合粉体,对制备工艺及其抗氧化性能进行了研究。
2.
Al_2O_3 nanosized composite powders encapsulated by ZrO_2(3Y) were prepared by heterogeneous nucleation combined with the co-deposition and were molded by dry pressing.
用非均匀成核法和液相共沉淀法相结合的方法制得ZrO2(3Y)包裹Al2O3纳米复合粉体,经干压成型,常压烧结制备ZTA复相陶瓷。
3.
ZrO_2(3Y)encapsulated Al_2O_3 nano composite powders were prepared by heterogeneous nucleation combined with the liquid co-deposition method using pH buffer solution as precipitator.
以pH值缓冲溶液为沉淀剂,用非均匀成核和液相共沉淀相结合的方法合成出了ZrO2(3Y)包裹Al2O3纳米复合粉体。
4) heterogeneous nucleation process
非均匀成核法
1.
To improve the stability of α-Fe_2O_3 in high temperature application, the SiO_2 and Al_2O_3-coated α-Fe_2O_3 composite particles were prepared from α-Fe_2O_3 coated uniformly with Si(OH)_4 and Al(OH)_3 by heterogeneous nucleation process.
为解决氧化铁红在高温下呈现不稳定性的问题,采用非均匀成核法使Si(OH)4和Al(OH)3均匀包覆在氧化铁红粉末颗粒表面,用X射线衍射仪、透射电镜、Zeta电位测定仪对包覆前后的Fe2O3粉末颗粒进行分析。
2.
Its hydrolysate ——aluminum hydroxide is coatedon the surface of flaky graphite to improve the wetting property by heterogeneous nucleation process.
本文用异丙醇铝作前驱物,通过非均匀成核法使鳞片石墨表面包覆氢氧化铝,石墨表面由疏水性变为亲水性。
3.
Nano-SiC particles were coated with Al(OH) 3 by heterogeneous nucleation process using a buffered pH solution as the precipitating reagent.
pH值缓冲溶液作为沉淀剂,利用非均匀成核法在纳米SiC微粒表面均匀涂覆一层Al(OH)3。
5) heterogeneous nucleation and growth
非均匀成核-生长
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